baber/WOPTO huggingface dataset:
Patent GB-994074-A (GB)
Title: Improvements in or relating to expandable polymers
Inventor: KLINE SAMUEL MCLAUGHLIN
IPC: B29C44/34
Filed: 1961-06-06
Abstract: A process for producing expandable polymeric material comprises rendering a thermoplastic resin molten in the presence of a normally non-solid organic blowing agent, i.e. a blowing agent which is not solid at N.T.P., under conditions of pressure sufficient to prevent foaming of the resin, to form an admixture of the thermoplastic resin and the blowing agent, and extruding the admixture directly into a cooling bath to quench the admixture before any substantial cooling occurs.  The product may be pelletized or may be extruded as films or sheets for vacuum thermoforming. The blowing agent may be added before or during the treatment in the extruder. By "quenching" is meant cooling the extrudate at a rapid rate from the extrusion temperature to a temperature less than the softening temperature of the polymer. Suitable blowing agents are hydrocarbons boiling in the range of from 20 DEG  to 100 DEG  C. and mixtures thereof with volatile solvents; cyclopentane and cyclopentadiene; and acetone, methyl alcohol, methyl acetate, ethyl acetate, methyl formate, ethyl formate, dichloroethylene, isopropyl chloride, propionaldehyde, dipropyl ether, methyl chloride, dichloroethane and dichlorodifluoromethane. Specified thermoplastic resins are polystyrene, copolymers of styrene with a -methylstyrene or acrylonitrile, polyvinyl chloride, polyvinyl acetate, cellulose acetate and nylon.
Patent GB-239528-A (GB)
Title: Improvements in and connected with internal combustion engines
IPC: F16J1/08
Filed: 1924-12-15
Abstract: 239,528. Gribojedoff, N. von. Dec. 15, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Valves.-A piston, particularly for an engine having a cylinder 2 revolving in a sleeve valve 13, is ground to fit the cylinder and is packed by peripheral grooves 16 in which lubricant col. lects. Specification 226,236 is referred to.
Patent GB-262499-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q5/16
Filed: 1925-09-03
Abstract: 262,499. Siemens & Halske Akt.- Ges., and Hartmann, K. Sept. 3, 1925. Direct-call party-line systems and apparatus. -Impulses for controlling step-by-step switches are sent to all stations from a central point in response to buzzer current from the calling station, which is cut off when the switch at the calling station reaches the point corresponding to the wanted station. The calling party removes his receiver T, sets the movable pointer a1 to the number required, and rotates by one complete turn a shaft carrying cam discs G, S, A. This shaft returns under the action of a spring, and the buzzer B is connected inductively to the line at contacts s1 through windings p, s, energizing a relay R, which releases a normallyoperative relay E. Battery is thus connected to the line over contacts i, which are opened and closed by a bridged interrupting relay J. The impulses sent out thereby operate the magnet H at each station to advance the shaft c, which carries an arm a2 and a cam disc N. A sluggish relay V is energized at the first impulse to bring a zero stop into the path of a pin on the shaft c, so that the shaft at each station is locked in the zero position. When the depression e of the disc S is reached, the buzzer B is disconnected for an interval, and impulsing ceases, allowing the relays V to fall back and release the shafts c. The actual selection then takes place. At the calling station, the cam A moves the pointer a1 into the path of the arm a2, and when engagement is made, a relay U energizes, disconnects the buzzer B at contacts u3, connects up the microphone at contacts u1, and removes a short-circuit from the receiver T at contacts u4. Relay U also opens its own circuit so long as the switchhook is up. The discs G, S, A are brought to rest by a stop cointrolled by the switchook. The projection d on the disc N is differently positioned at each station, and that at the wanted station is now operative, and the bell W is connected up at contacts n1, while at contacts n3 the receiver T is connected to the line and its short-circuit is opened. When the calling party hangs up, the discs G, S, A return to normal, and the contacts of the relay U are restored. The buzzer B is connected up, and impulses are sent to bring the switches at all the stations to the zero position. All the stations may be connected together by setting the pointer a1 at the calling station to a particular position. A projection f on the cam N then comes into operative position at each station.
Patent GB-189197-A (GB)
Title: Improvements in automatic weighing machines
IPC: G01G1/00
Filed: 1921-08-22
Abstract: 189,197. Griffin, A. H., and Griffin, A., (trading as Griffin & Co., A. H.). Aug. 22, 1921. Right to Patent relinquished. Pendulum-weight apparatus; vibration, preventing.-In an automatic weighing-machine of the kind in which the scale pan is supported at a point between the fulcrum and the outer end of the lever, the said outer end is connected directly with a single balance mechanism which is arranged to move in a plane, which is at rightangles to the plane in which the main lever moves, in order to operate a single pointer in that plane. As shewn, the scale-pan H, Fig. 1, is supported on knife-edges f situated between the fulcrum e and the outer end D' of the lever D, which is connected through a band c to a pendulous resistant C, Fig. 3, adapted to move in a plane at rght-angles to the plane of the lever and to operate a pointer p. The oscillations of of the mechanism are damped by a dash-pot K, connected to the lever D at the end remote from the balancemechanism. The machine may be levelled by the screwed legs a<1>, a<2>, which bear onto a strip of metal a<3> secured to the base of the housing by a screw a<4>. Reference has been directed by the Comptroller to Specification 6284/06.
Patent GB-516843-A (GB)
Title: A process for producing finishing or dressing effects on textiles
IPC: D06M11/62
Filed: 1938-07-26
Abstract: 516,843. Swelling textile materials. ROTTA, W., and QUEHL, K. July 26, 1938, No. 22199. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 27, 1939.] [Class 15 (ii)] Textile materials comprising cellulose fibres are treated with acidic, basic or salt-like swelling agents, other-than sulphuric acid, so as to increase the volume of the fibres by not more than 50 per cent., rinsed and dried. The swelling agent employed is preferably a mixture of two substances each of which is present in insufficient concentration to effect swelling by itself, e.g., alkali hydroxide with an aluminate or zincate. The limited swelling effect may be attained by the use of weak swelling solutions, or by the limited application of stronger solutions e.g., by impregnation and squeezing or by spraying. Pressure and/or heat may be applied, so as to produce an embossed or patterned effect if desired, e.g., jaquard effects. During or after the swelling a softening agent, e.g., glycerine or a dressing agent, e.g., urea may be applied. The treatment may be applied to yarn which is subsequently reduced to fibre by combing to give artificial wool. In examples, (1) Artificial viscose crape is impregnated and squeezed so as to leave on the fabric 30 per cent. of 40‹ BÚ nitric acid, allowed to stand, rinsed and dried; (2) A solution of zinc chloride is sprayed on to viscose staple fibre, allowed to stand, rinsed and dried. Other examples describe the limited application, by squeezing or by spraying, of viscose materials with solutions of phosphoric acid, calcium thiocyanate, soda lye containing some sodium aluminate and soda lye containing some zinc oxide.
Patent GB-1366460-A (GB)
Title: Process and system for reclamation of useful products from solid refuse
IPC: F23G5/30
Filed: 1972-05-11
Abstract: 1366460 Treating refuse; treating waste HERCULES Inc 11 May 1972 [17 May 1971] 22233/72 Headings C1C and C1K [Also in Division C5] Solid refuse is shredded and subjected to aerobic digestion to produce a crude humus product and a non-digested residue comprising paper which is pyrolysed to produce combustible gas, liquid hydrocarbons, tar and/or carbon. As indicated in Fig. 1 ferrous metals are removed magnetically prior to shredding and the shredded refuse can be mixed with sanitary sewage prior to the digestion; the residue 15 from the digestion can be mixed with industrial refuse 19 prior to the pyrolyses. The pyrolyses can be carried out in the furnace shown in Fig. 3 in which the refuse is fluidized together with a heat transfer medium at 1400-2000‹ F. such as sand by a gas such as nitrogen.
Patent GB-598033-A (GB)
Title: Improvements in or relating to garden rollers
IPC: A01B29/02
Filed: 1945-08-29
Abstract: 598,033. Garden rollers. TUBELA ENGINEERING CO., Ltd., and AHLIN, F. Aug. 29, 1945, No. 22261. [Class 6 (i)] A garden roller comprises a roller member having a counterweight mounted on a spindle C within the roller, and a handle secured to the ends of the spindle, said handle comprising a metal tube A bent into a generally U-shaped form with sockets in the ends of the arms of the U which receive and are rigidly connected to the ends of the spindle. As shown, the roller is of the solid or concrete - filled type and the sockets are formed by flattening and drilling or punching the ends of the arms. A tie-bar B is welded to the arms of the handle which may be of any metal such as steel or light alloy.
Patent GB-615125-A (GB)
Title: Dispersions of polymeric materials
IPC: C08J3/09
Filed: 1946-07-26
Abstract: Tetrafluoroethylene copolymers are dispersed in a normally liquid neutral ester, preferably of a carboxylic acid, or ketone boiling above 175 DEG  C.  Copolymers specified are those with ethylene, styrene, vinyl chloride, vinylidene chloride, chlorotrifluoroethylene, vinyl acetate, ethyl acrylate and methyl methacrylate.  Suitable esters are methyl laurate, oleate and palmitate, ethyl caprylate and benzoate, dimethyl succinate, malonate, glutarate, adipate, azelate, phthalate and hexahydrophthalate, diethyl oxalate and adipate, dibutyl sebacate and phthalate and tributyl phosphate.  Ketones include fenchone, isofenchone, phorone, isophorone, acetophenone and benzophenone. The dispersions may be diluted with kerosene, alcohols and ethers or concentrated by centrifuging and may include pigments, plasticizers, resins, waxes and metal powders.  They may be prepared and used as described in Specification 614,762.
Patent GB-1082608-A (GB)
Title: Improvements in or relating to shelves
Inventor: HALLILEY WILFRED COATES
IPC: A47B96/02
Filed: 1965-05-26
Abstract: 1,082,608. Bracket shelves. BEARD & CORNALL Ltd. Aug. 4, 1966 [May 26, 1965], No. 22327/65. Heading A4B. A shelf of fibreglass, or rigid synthetic plastic, comprises a horizontal supporting surface 1, integral with a curved undersurface 2 terminating vertically beneath the rear edge of the supporting surface, and a foamed rubber sealing strip 7 secured to the rear edge of the supporting surface 1 for engagement with a wall on which the shelf is mounted. The strip 7 is bonded to a lip 5 integral with the shelf or formed by an L-section aluminium strip bonded to the shelf. Wall mounting slots (6) are provided in the lip 5. The undersurface 2 may be slotted to accommodate mounting brackets for a radiator above which the shelf may be mounted.
Patent GB-1426359-A (GB)
Title: Microbeam probe apparatus
IPC: H01J37/252
Filed: 1973-05-10
Abstract: 1426359 Electron or ion beam apparatus MAX-PLANCK GES ZUR FOERDERUNG DER WISSENSCHAFTEN EV 10 May 1973 [12 May 1972] 22366/73 Heading HID An electron or ion beam microprobe apparatus comprises means for generating a beam 12 of primary particles, an objective comprising two rotationally symmetrical electrostatic lenses formed by fields between electrodes 22, 24, 26 and an apertured diaphragm between the two lenses for focusing the beam on an object 16, the secondary particles thus formed being focused by lens 22, 24 on the apertured diaphragm and then concentrated by the other lens 24, 26 into a parallel beam travelling in the opposite direction to the primary beam, the apparatus also including means such as spherical condenser 62 to separate the primary beam 12 and the secondary beam 40 by virtue of their differing energies. Within the bore of electrode 26, electrostatic scanning electrodes (38, 42), Fig. 3 (not shown) can be provided. The apparatus can have an optical mirror microscope comprising an annular concave mirror 48, a convex mirror 50 and a deflecting mirror 52. In view of the fact that the electrostatic objective has a short focal length, it may be necessary to deflect light from the object by the provision of parallel reflecting coatings (56, 58) on the facing surfaces of electrodes 22, 24.
Patent GB-843110-A (GB)
Title: Method of producing a roadmaking material
IPC: C04B20/10
Filed: 1956-07-20
Abstract: A road-making material is prepared by impregnating in the presence of air a finely divided filler, e.g. rock dust, ground slay, ground clinker, cement and hydraulic lime, with an aqueous emulsion of a mixture of hydrocarbons, the emulsion containing between 10 and 20% by weight of water glass, and mixing the impregnated filler material with a bituminous mix, e.g. granite chippings or sand bonded by bitumen.  Mixtures of hydrocarbons are exemplified by those obtained as by-products in petroleum distillation or in the gasification or carbonization of mineral coal, e.g. bitumen, bitumen flux oil, heavy oil, gas oil kerosene, petrol, tar and tar oils.  Mixtures of these by-products may be employed.  Tall oil is preferably included as an emulsifier.  The water glass not only stabilizes the emulsion but is said to react with carbon dioxide in the air to produce a wear-resistant coating of silicic acid on the particles of filler. The components of the emulsion may be mixed at between 60 DEG C and 70 DEG C and preferably form between 5 and 15% by weight of the impregnated filler.
Patent GB-1310981-A (GB)
Title: Dynamo-electric machine
IPC: H02K1/18
Filed: 1970-05-11
Abstract: 1310981 Insulation for dynamo-electric machines PAPST-MOTOREN KG 11 May 1970 [14 May 1969] 22691/70 Heading H2A In a dynamo-electric machine the magnetically and electrically active parts of the stator and rotor are completely insulated from any metal parts of the machine accessible to an operator. In the external rotor motor of Fig. 1 a layer of insulation 3 separates the magnetically active part 2 of the rotor, e.g. a hysteresis ring or eddy current ring, from the supporting structure 1 which may be made partly of plastics material. The stator laminations 11 are separated by an insulating layer or tube 14 from an insulating tube 13 carrying bearings for the rotor. In addition the stator end windings 12 are surrounded by a layer of insulation 15. In an internal squirrel cage rotor motor, Fig. 2 (not shown), the ends of a tube of insulating material (27) separating the rotor laminations (26) from the shaft (28) may be extended to lie between the rotor end rings and the motor bearings. The stator laminations (21) are separated from the motor casing by a layer of insulation (23) which also surrounds the stator end windings (22). In a modification (not shown) a stator pole winding is mounted on an insulating former of U-shaped cross-section, the open end of the former being filled with an insulating compound and the legs of the "U" having corrugations to increase the length of the leakage path. In the external rotor motor of Fig. 3 the stator laminations 55 and winding 56 are embedded in cast or moulded insulation 57 anchored in recesses in an insulating tube 54 carrying bearings for the rotor. The magnetically active part 52 of the rotor is mounted in an insulating carrier 51. In the Fig. 2 embodiment the motor casing (24) may be secured to end plates (30) either by a nut and bolt arrangement or by resilient clips engaging recesses in the end plates.
Patent GB-602818-A (GB)
Title: Improvements in or relating to evaporators
IPC: C11B1/10
Filed: 1945-09-05
Abstract: <PICT:0602818/III/1> <PICT:0602818/III/2> An evaporator comprising a casing over a drum disposed so that the peripheral surface of the drum is spaced from the interior of the casing wherein blades, some of which extend in a slantwise direction, are arranged around and along the peripheral surface, the arrangement being such that the slanting blades cause liquid, introduced into the annular chamber between the casing and the drum, to move along the chamber from the inlet to the outlet when there is relative rotation between the casing and the drum.  In a preferred embodiment, a film of liquid is formed and changed, by the action of the blades, on the interior of the casing, which is jacketed by the heating medium.  To provide "second stage" evaporation, the interior of the drum may be divided by partitions into several <PICT:0602818/III/3> annular chambers through which the liquid passes, from the outermost to the innermost, while being countercurrently stripped with steam or other gaseous media.  Scoops are provided on the partitions for the transfer of liquid from one chamber to the next.  The apparatus is especially suitable for use with liquids which foam during evaporation, or liquids containing small quantities of finely-divided solids.  The recovery of solvents from oil extracts is referred to; also the deodorization of palm, cotton seed or soya bean oils.  Casing 10, surrounded by lagged steam jacket 17, and drum 26 form annular evaporation chamber 16. Arcuate sections 15 are supported on the drum by brackets 25 and have blades 22, Fig. 4, punched-up out of them. The oil-in-solvent enters the apparatus through inlet 21 and is moved to the opposite end 23 of chamber 16 by the rotation of the drum and the action of blades 24 which are resiliently mounted in a slantwise direction on the sections <PICT:0602818/III/4> 15 and scrape the interior surface of the casing.  The evaporated solvent escapes via duct 30.  The oil, partially freed from solvent, collects in tray 29a and is delivered, via spout 29b and opening 29c, into the outermost of the annular chambers 32 into which the interior of the drum is divided by overlapping arcuate partitions 31.  Each partition carries scoops 37 which are located alternately at opposite ends of the chambers, Figs. 1 and 2, and which open into the passage-ways 33 between the partitions, Fig. 3, in the direction of rotation.  These scoops transfer the liquid from chamber to chamber in an inward direction while steam, injected into the innermost chamber through inlet 43 and port 39, flows over it counter-currently.  The stripped oil is discharged from the drum into sump 40 through port 39, and is removed from the apparatus by pumps 42.  A condenser 45 and suction apparatus 46 are connected to the vapour duct 30.  The secondary evaporator may comprise an apparatus separate from the primary part, or may be dispensed with altogether.  Specification 602,861 is referred to.
Patent GB-316554-A (GB)
IPC: B64F1/14
Filed: 1929-07-25
Abstract: 316,554. Krell, O. July 30, 1928, [Convention date]. Buoys.-An apparatus for mooring airships on water consists of a fixed buoy B in which means are provided for engaging a ball C carried at the end of a mooring foot mounted under the cabin of the airship. The buoy B may be suspended by springs f within an annular float F which serves to carry personnel, recharging apparatus and the like. The buoyancy of the buoy B may be varied by pumping water into or out of it to counterbalance the lift of the airship. According to a modification the float F may be omitted and the buoy moored by three chains arranged at angles of 120‹ to each other.
Patent GB-849442-A (GB)
Title: Improvements in or relating to electric wire terminals and connectors
Inventor: CHANDLER WALTER
IPC: H01R4/50
Filed: 1956-07-25
Abstract: 849,442. Wire terminals; two-part couplings. PLESSEY CO. Ltd. May 17,1957 [July 25, 1956], No. 22951/56. Class 38(1) A conductor i is secured to a terminal comprising a ferrule j and connector lug k by slipping the ferrule over the conductor, inserting the recessed spike l into the conductor strands and crimping the ferrule round the conductor end. A stepped connector lug is also described (Fig. 3, not shown) as is a connector lug in the form of a plug pin (Fig. 4, not shown).
Patent GB-1532472-A (GB)
Title: Transistor inverters
IPC: H02M7/5383
Filed: 1976-06-03
Abstract: 1532472 Transistor oscillator SONY CORP 3 June 1976 [6 June 1975] 23005/76 Heading H3T In a transistor convertor generally of the type shown, current feedback is usually applied via a third winding (31, Fig. 1 not shown) on the input transformer. Optimum design may require a fractional number of turns, rounding down prevents starting, rounding up overdrives the transistors and slows the oscillator due to hole storage. By use of the current transformer 50 whose windings 51, 52 can have turns NA, NB the optimal turns ratio can be provided. When windings 31, 32 have Ni turns and the transistors 21, 22 have amplification factor h fe  then the turns for winding 33, Nc, are given by Winding 34 provides voltage feedback.
Patent GB-1392491-A (GB)
Title: Direction determining system
IPC: G05D1/06
Filed: 1972-05-16
Abstract: 1392491 Code signalling apparatus SANDERS ASSOCIATES Inc 16 May 1972 [24 May 1971] 23009/72 Heading G4F [Also in Division H4] A radiant energy transmitter for providing an observer with an indication of his position with respect to the transmitter comprises a plurality of radiant energy sources, a plurality of masks each having areas differently responsive to the said energy, means for projecting the energy pattern emerging from the masks and means for pulsing said sources one at a time. The radiant energy may be electromagnetic or acoustic; in the embodiments described it comprises visible light. Referring to Fig. 2, three masks 21, 22, 23 are provided. If the masks are in front of light sources which are pulsed sequentially then an observer at P will see a flash, and two spaces. The pulse pattern observed will be dependent on the observer's position. In Fig. 3, light sources 31a- 31n are pulsed sequentially by device 35. Lenses 32a to 32n condense the light onto masks 33a-33n and lenses 34a to 34n project the sequential light patterns. Fig. 4 (not shown), illustrates a Gray code formed from a number of masks. The light flashes may be decoded by a human observer or by an electronic receiver (Fig. 5, not shown). A further embodiment, (Fig. 6, not shown), uses two light sources and masks. One source is pulsed singly and the other by double pulses. The masks are arranged so that an observer to the right of the centre line of the masks will see a single flash and, if to the left, will see a double flash. An electronic receiver may be provided to detect the relative amplitude of the single and double pulses. The transmitter may aid the pilot of an aircraft in his approach to a landing strip.